Clinical Cases :
Infectious Coryza : Highly contagious acute disease of upper respiratory tract of Chicken which can turn into Chronic respiratory disease .
It`s also called Raup
Cause : Haemophilus Paragallinarum ( Gram -ve Bacteria – Rod shape – Non motile – Non spore form – Capsulated )
Growth Requirements :
- Blood ( x Factor )
- High humidity ( 5-10% CO2 – 1% Chicken Serum – Nacl 1-1.5% gm/L
- Best temperature for growth 37 c
Signs :
- Rapid onset
- High Morbidity
- Low Mortality
- Poor Growth performance
- Decease food water Consumption
- Decrease Egg production
- Seromucoid Naasal and ocular discharge
- Facial edema
- Conjunctivitis
- Swollen wattles
- Difficulty in breathing
- Fowl odor in flock
- Arthritis
- Septicemia
Post-mortem lesions :
- Cattahral to Fibrion inflammation of Nasal passage,Infraorbital sinus and Conjunctiva
- Sub Cutenous edema of The face and wattle
- Pneumonia and Air sacculitis
Diagnosis :
- Flock History
- Clinical signs
- Lesions
- Isolation and identification of Causative agent ( The sample from infra orbital sinus,Trachea and Air sac inoculated in blood agar )
Treatment :
- Sulphonemides
- Trimethoprim + Sulphamethoxine
- Dihydrostreptomycin + Sulpha
Control :
- Depopulation of all infected, Recovered flock
- Cleaning and disinfectant of Equipments and building
- Rest for 2-3 weeks
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